lylegordon.bsky.social
Chitonman, Chitonman, Chews whatever a chiton can.
24 posts
24 followers
44 following
Active Commenter
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I thought no one died in the recent crash
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Exactly, don't complain about conflict between e-bikes and pedal bikes, just build more bike infrastructure to accomodate both!
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The problem is not really the fast ebikes, its that just like normal bikes, they don't have enough dedicated infrastructure so they get stuck sharing the limited bike lanes. Which, you are correct, causes conflicts, just like conflict between cars and bikes when there is no bike lane at all.
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I just drove past the same thing on my commute home yesterday evening. It had rained so everyone forgot how to drive safely.
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It's a standard unit for water.
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Also, while we are at it please remove the ultra bright blue LEDs from everything.
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Just make everything green and it will work l itself out
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Im a Canadian living in the USA not European but I don't have issues with individuals who use cars, myself included, you are correct you need them in most places. I do have issue with the design of cities and people who continue to promote cars as the only mode.
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I read that shopkeepers who drive overestimate that their clients also drive when that often isn't the case (in cities).
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Isn't that saying the same thing.
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Absolutely, your ebike is much lighter than an EV so even if they are similarly efficient by the cal/g/km metric the absolute energy usage will be much less for the bike.
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I didn't use the metabolic equivalent of task (MET) here as I'm not certain that's the best approach. I just used the power output of the person riding and didn't account for the inefficiency inherent to the generation of that power. If its 3-5x that would be significant.
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This calculation is normalized by weight so might not be a huge difference in the end and I didn't know how to account for the aerodynamic difference of the larger rider so stuck close to the defaults.
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That's a factor of 1000 right? I thoight the original paper used standard calories.
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That was the default. Not unreasonable for a carbon road bike.
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For comparison can you convert to the same units, cal/g/km?
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No, its just like the figure, energy consumed to move a distance normalized by "body" weight.
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This neglected any inefficiency of converting food energy to power by the person. The car figures should include this.
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I re-calculated the bike numbers using the calculator here: www.gribble.org/cycling/powe... and I got 0.04 cal/g/km if a 140lb rider on a 17lb bike travels at 15mph consuming 85W, beating the Tesla Model 3, going slower is better also.
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I was curious how modern cars compare and a hybrid Prius (52 mpg) is about 0.25 cal/g/km. A Tesla Model 3 (3.9 mi/kwh) is <0.1 cal/g/km, seems to now beat a man on bicycle.
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I suggest Dawson city, Yukon for your no TSA airport fix.
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Exactly, helmets work but PPE should be a last resort. See the heirachy of engineering controls
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No one can argue that confidence can eliminate the risks that timid riders face, maybe reduce a bit. Are there actually studies showing that confident riders are injured by cars less per ridden than timid riders?
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I really enjoyed the bike share in Toronto when I visited but it seemed expensive, my wife and I took them out for a few hours and it was $40 for a couple rides. I expected it would be competitive with bus fair. Enjoyed it as a tourist and was affordable but just seemed pricey.